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Sweden-Number/dlls/windowscodecs/libtiff.c

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/*
* Copyright 2010 Vincent Povirk for CodeWeavers
* Copyright 2016 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#if 0
#pragma makedep unix
#endif
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_TIFFIO_H
#include <tiffio.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "winbase.h"
#include "objbase.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
#ifdef SONAME_LIBTIFF
/* Workaround for broken libtiff 4.x headers on some 64-bit hosts which
* define TIFF_UINT64_T/toff_t as 32-bit for 32-bit builds, while they
* are supposed to be always 64-bit.
* TIFF_UINT64_T doesn't exist in libtiff 3.x, it was introduced in 4.x.
*/
#ifdef TIFF_UINT64_T
# undef toff_t
# define toff_t UINT64
#endif
static CRITICAL_SECTION init_tiff_cs;
static CRITICAL_SECTION_DEBUG init_tiff_cs_debug =
{
0, 0, &init_tiff_cs,
{ &init_tiff_cs_debug.ProcessLocksList,
&init_tiff_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": init_tiff_cs") }
};
static CRITICAL_SECTION init_tiff_cs = { &init_tiff_cs_debug, -1, 0, 0, 0, 0 };
static void *libtiff_handle;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
MAKE_FUNCPTR(TIFFClientOpen);
MAKE_FUNCPTR(TIFFClose);
MAKE_FUNCPTR(TIFFCurrentDirOffset);
MAKE_FUNCPTR(TIFFGetField);
MAKE_FUNCPTR(TIFFIsByteSwapped);
MAKE_FUNCPTR(TIFFNumberOfDirectories);
MAKE_FUNCPTR(TIFFReadDirectory);
MAKE_FUNCPTR(TIFFReadEncodedStrip);
MAKE_FUNCPTR(TIFFReadEncodedTile);
MAKE_FUNCPTR(TIFFSetDirectory);
MAKE_FUNCPTR(TIFFSetField);
MAKE_FUNCPTR(TIFFWriteDirectory);
MAKE_FUNCPTR(TIFFWriteScanline);
#undef MAKE_FUNCPTR
static void *load_libtiff(void)
{
void *result;
RtlEnterCriticalSection(&init_tiff_cs);
if (!libtiff_handle &&
(libtiff_handle = dlopen(SONAME_LIBTIFF, RTLD_NOW)) != NULL)
{
void * (*pTIFFSetWarningHandler)(void *);
void * (*pTIFFSetWarningHandlerExt)(void *);
#define LOAD_FUNCPTR(f) \
if((p##f = dlsym(libtiff_handle, #f)) == NULL) { \
ERR("failed to load symbol %s\n", #f); \
libtiff_handle = NULL; \
RtlLeaveCriticalSection(&init_tiff_cs); \
return NULL; \
}
LOAD_FUNCPTR(TIFFClientOpen);
LOAD_FUNCPTR(TIFFClose);
LOAD_FUNCPTR(TIFFCurrentDirOffset);
LOAD_FUNCPTR(TIFFGetField);
LOAD_FUNCPTR(TIFFIsByteSwapped);
LOAD_FUNCPTR(TIFFNumberOfDirectories);
LOAD_FUNCPTR(TIFFReadDirectory);
LOAD_FUNCPTR(TIFFReadEncodedStrip);
LOAD_FUNCPTR(TIFFReadEncodedTile);
LOAD_FUNCPTR(TIFFSetDirectory);
LOAD_FUNCPTR(TIFFSetField);
LOAD_FUNCPTR(TIFFWriteDirectory);
LOAD_FUNCPTR(TIFFWriteScanline);
#undef LOAD_FUNCPTR
if ((pTIFFSetWarningHandler = dlsym(libtiff_handle, "TIFFSetWarningHandler")))
pTIFFSetWarningHandler(NULL);
if ((pTIFFSetWarningHandlerExt = dlsym(libtiff_handle, "TIFFSetWarningHandlerExt")))
pTIFFSetWarningHandlerExt(NULL);
}
result = libtiff_handle;
RtlLeaveCriticalSection(&init_tiff_cs);
return result;
}
static tsize_t tiff_stream_read(thandle_t client_data, tdata_t data, tsize_t size)
{
IStream *stream = (IStream*)client_data;
ULONG bytes_read;
HRESULT hr;
hr = stream_read(stream, data, size, &bytes_read);
if (FAILED(hr)) bytes_read = 0;
return bytes_read;
}
static tsize_t tiff_stream_write(thandle_t client_data, tdata_t data, tsize_t size)
{
FIXME("stub\n");
return 0;
}
static toff_t tiff_stream_seek(thandle_t client_data, toff_t offset, int whence)
{
IStream *stream = (IStream*)client_data;
DWORD origin;
ULONGLONG new_position;
HRESULT hr;
switch (whence)
{
case SEEK_SET:
origin = STREAM_SEEK_SET;
break;
case SEEK_CUR:
origin = STREAM_SEEK_CUR;
break;
case SEEK_END:
origin = STREAM_SEEK_END;
break;
default:
ERR("unknown whence value %i\n", whence);
return -1;
}
hr = stream_seek(stream, offset, origin, &new_position);
if (SUCCEEDED(hr)) return new_position;
else return -1;
}
static int tiff_stream_close(thandle_t client_data)
{
/* Caller is responsible for releasing the stream object. */
return 0;
}
static toff_t tiff_stream_size(thandle_t client_data)
{
IStream *stream = (IStream*)client_data;
ULONGLONG size;
HRESULT hr;
hr = stream_getsize(stream, &size);
if (SUCCEEDED(hr)) return size;
else return -1;
}
static int tiff_stream_map(thandle_t client_data, tdata_t *addr, toff_t *size)
{
/* Cannot mmap streams */
return 0;
}
static void tiff_stream_unmap(thandle_t client_data, tdata_t addr, toff_t size)
{
/* No need to ever do this, since we can't map things. */
}
static TIFF* tiff_open_stream(IStream *stream, const char *mode)
{
stream_seek(stream, 0, STREAM_SEEK_SET, NULL);
return pTIFFClientOpen("<IStream object>", mode, stream, tiff_stream_read,
tiff_stream_write, (void *)tiff_stream_seek, tiff_stream_close,
(void *)tiff_stream_size, (void *)tiff_stream_map, (void *)tiff_stream_unmap);
}
typedef struct {
struct decoder_frame frame;
int bps;
int samples;
int source_bpp;
int planar;
int indexed;
int reverse_bgr;
int invert_grayscale;
UINT tile_width, tile_height;
UINT tile_stride;
UINT tile_size;
int tiled;
UINT tiles_across;
} tiff_decode_info;
struct tiff_decoder
{
struct decoder decoder;
IStream *stream;
TIFF *tiff;
DWORD frame_count;
DWORD cached_frame;
tiff_decode_info cached_decode_info;
INT cached_tile_x, cached_tile_y;
BYTE *cached_tile;
};
static inline struct tiff_decoder *impl_from_decoder(struct decoder* iface)
{
return CONTAINING_RECORD(iface, struct tiff_decoder, decoder);
}
static HRESULT tiff_get_decode_info(TIFF *tiff, tiff_decode_info *decode_info)
{
uint16 photometric, bps, samples, planar;
uint16 extra_sample_count, extra_sample, *extra_samples;
uint16 *red, *green, *blue;
UINT resolution_unit;
float xres=0.0, yres=0.0;
int ret, i;
const BYTE *profile;
UINT len;
decode_info->indexed = 0;
decode_info->reverse_bgr = 0;
decode_info->invert_grayscale = 0;
decode_info->tiled = 0;
decode_info->source_bpp = 0;
ret = pTIFFGetField(tiff, TIFFTAG_PHOTOMETRIC, &photometric);
if (!ret)
{
WARN("missing PhotometricInterpretation tag\n");
return E_FAIL;
}
ret = pTIFFGetField(tiff, TIFFTAG_BITSPERSAMPLE, &bps);
if (!ret) bps = 1;
decode_info->bps = bps;
ret = pTIFFGetField(tiff, TIFFTAG_SAMPLESPERPIXEL, &samples);
if (!ret) samples = 1;
decode_info->samples = samples;
if (samples == 1)
planar = 1;
else
{
ret = pTIFFGetField(tiff, TIFFTAG_PLANARCONFIG, &planar);
if (!ret) planar = 1;
if (planar != 1)
{
FIXME("unhandled planar configuration %u\n", planar);
return E_FAIL;
}
}
decode_info->planar = planar;
TRACE("planar %u, photometric %u, samples %u, bps %u\n", planar, photometric, samples, bps);
switch(photometric)
{
case 0: /* WhiteIsZero */
decode_info->invert_grayscale = 1;
/* fall through */
case 1: /* BlackIsZero */
if (samples == 2)
{
ret = pTIFFGetField(tiff, TIFFTAG_EXTRASAMPLES, &extra_sample_count, &extra_samples);
if (!ret)
{
extra_sample_count = 1;
extra_sample = 0;
extra_samples = &extra_sample;
}
}
else if (samples != 1)
{
FIXME("unhandled %dbpp sample count %u\n", bps, samples);
return E_FAIL;
}
decode_info->frame.bpp = bps * samples;
decode_info->source_bpp = decode_info->frame.bpp;
switch (bps)
{
case 1:
if (samples != 1)
{
FIXME("unhandled 1bpp sample count %u\n", samples);
return E_FAIL;
}
decode_info->frame.pixel_format = GUID_WICPixelFormatBlackWhite;
break;
case 4:
if (samples != 1)
{
FIXME("unhandled 4bpp grayscale sample count %u\n", samples);
return E_FAIL;
}
decode_info->frame.pixel_format = GUID_WICPixelFormat4bppGray;
break;
case 8:
if (samples == 1)
decode_info->frame.pixel_format = GUID_WICPixelFormat8bppGray;
else
{
decode_info->frame.bpp = 32;
switch(extra_samples[0])
{
case 1: /* Associated (pre-multiplied) alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat32bppPBGRA;
break;
case 0: /* Unspecified data */
case 2: /* Unassociated alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat32bppBGRA;
break;
default:
FIXME("unhandled extra sample type %u\n", extra_samples[0]);
return E_FAIL;
}
}
break;
case 16:
if (samples != 1)
{
FIXME("unhandled 16bpp grayscale sample count %u\n", samples);
return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
}
decode_info->frame.pixel_format = GUID_WICPixelFormat16bppGray;
break;
case 32:
if (samples != 1)
{
FIXME("unhandled 32bpp grayscale sample count %u\n", samples);
return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
}
decode_info->frame.pixel_format = GUID_WICPixelFormat32bppGrayFloat;
break;
default:
WARN("unhandled greyscale bit count %u\n", bps);
return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
}
break;
case 2: /* RGB */
if (samples == 4)
{
ret = pTIFFGetField(tiff, TIFFTAG_EXTRASAMPLES, &extra_sample_count, &extra_samples);
if (!ret)
{
extra_sample_count = 1;
extra_sample = 0;
extra_samples = &extra_sample;
}
}
else if (samples != 3)
{
FIXME("unhandled RGB sample count %u\n", samples);
return E_FAIL;
}
decode_info->frame.bpp = max(bps, 8) * samples;
decode_info->source_bpp = bps * samples;
switch(bps)
{
case 1:
case 4:
case 8:
decode_info->reverse_bgr = 1;
if (samples == 3)
decode_info->frame.pixel_format = GUID_WICPixelFormat24bppBGR;
else
switch(extra_samples[0])
{
case 1: /* Associated (pre-multiplied) alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat32bppPBGRA;
break;
case 0: /* Unspecified data */
case 2: /* Unassociated alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat32bppBGRA;
break;
default:
FIXME("unhandled extra sample type %i\n", extra_samples[0]);
return E_FAIL;
}
break;
case 16:
if (samples == 3)
decode_info->frame.pixel_format = GUID_WICPixelFormat48bppRGB;
else
switch(extra_samples[0])
{
case 1: /* Associated (pre-multiplied) alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat64bppPRGBA;
break;
case 0: /* Unspecified data */
case 2: /* Unassociated alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat64bppRGBA;
break;
default:
FIXME("unhandled extra sample type %i\n", extra_samples[0]);
return E_FAIL;
}
break;
case 32:
if (samples == 3)
decode_info->frame.pixel_format = GUID_WICPixelFormat96bppRGBFloat;
else
switch(extra_samples[0])
{
case 1: /* Associated (pre-multiplied) alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat128bppPRGBAFloat;
break;
case 0: /* Unspecified data */
case 2: /* Unassociated alpha data */
decode_info->frame.pixel_format = GUID_WICPixelFormat128bppRGBAFloat;
break;
default:
FIXME("unhandled extra sample type %i\n", extra_samples[0]);
return E_FAIL;
}
break;
default:
WARN("unhandled RGB bit count %u\n", bps);
return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
}
break;
case 3: /* RGB Palette */
if (samples != 1)
{
FIXME("unhandled indexed sample count %u\n", samples);
return E_FAIL;
}
decode_info->indexed = 1;
decode_info->frame.bpp = bps;
switch (bps)
{
case 1:
decode_info->frame.pixel_format = GUID_WICPixelFormat1bppIndexed;
break;
case 2:
decode_info->frame.pixel_format = GUID_WICPixelFormat2bppIndexed;
break;
case 4:
decode_info->frame.pixel_format = GUID_WICPixelFormat4bppIndexed;
break;
case 8:
decode_info->frame.pixel_format = GUID_WICPixelFormat8bppIndexed;
break;
default:
FIXME("unhandled indexed bit count %u\n", bps);
return E_NOTIMPL;
}
break;
case 5: /* Separated */
if (samples != 4)
{
FIXME("unhandled Separated sample count %u\n", samples);
return E_FAIL;
}
decode_info->frame.bpp = bps * samples;
switch(bps)
{
case 8:
decode_info->frame.pixel_format = GUID_WICPixelFormat32bppCMYK;
break;
case 16:
decode_info->frame.pixel_format = GUID_WICPixelFormat64bppCMYK;
break;
default:
WARN("unhandled Separated bit count %u\n", bps);
return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
}
break;
case 4: /* Transparency mask */
case 6: /* YCbCr */
case 8: /* CIELab */
default:
FIXME("unhandled PhotometricInterpretation %u\n", photometric);
return E_FAIL;
}
ret = pTIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &decode_info->frame.width);
if (!ret)
{
WARN("missing image width\n");
return E_FAIL;
}
ret = pTIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &decode_info->frame.height);
if (!ret)
{
WARN("missing image length\n");
return E_FAIL;
}
if ((ret = pTIFFGetField(tiff, TIFFTAG_TILEWIDTH, &decode_info->tile_width)))
{
decode_info->tiled = 1;
ret = pTIFFGetField(tiff, TIFFTAG_TILELENGTH, &decode_info->tile_height);
if (!ret)
{
WARN("missing tile height\n");
return E_FAIL;
}
decode_info->tile_stride = ((decode_info->frame.bpp * decode_info->tile_width + 7)/8);
decode_info->tile_size = decode_info->tile_height * decode_info->tile_stride;
decode_info->tiles_across = (decode_info->frame.width + decode_info->tile_width - 1) / decode_info->tile_width;
}
else if ((ret = pTIFFGetField(tiff, TIFFTAG_ROWSPERSTRIP, &decode_info->tile_height)))
{
if (decode_info->tile_height > decode_info->frame.height)
decode_info->tile_height = decode_info->frame.height;
decode_info->tile_width = decode_info->frame.width;
decode_info->tile_stride = ((decode_info->frame.bpp * decode_info->tile_width + 7)/8);
decode_info->tile_size = decode_info->tile_height * decode_info->tile_stride;
}
else
{
/* Some broken TIFF files have a single strip and lack the RowsPerStrip tag */
decode_info->tile_height = decode_info->frame.height;
decode_info->tile_width = decode_info->frame.width;
decode_info->tile_stride = ((decode_info->frame.bpp * decode_info->tile_width + 7)/8);
decode_info->tile_size = decode_info->tile_height * decode_info->tile_stride;
}
resolution_unit = 0;
pTIFFGetField(tiff, TIFFTAG_RESOLUTIONUNIT, &resolution_unit);
ret = pTIFFGetField(tiff, TIFFTAG_XRESOLUTION, &xres);
if (!ret)
{
WARN("missing X resolution\n");
}
/* Emulate the behavior of current libtiff versions (libtiff commit a39f6131)
* yielding 0 instead of INFINITY for IFD_RATIONAL fields with denominator 0. */
if (!isfinite(xres))
{
xres = 0.0;
}
ret = pTIFFGetField(tiff, TIFFTAG_YRESOLUTION, &yres);
if (!ret)
{
WARN("missing Y resolution\n");
}
if (!isfinite(yres))
{
yres = 0.0;
}
if (xres == 0.0 || yres == 0.0)
{
decode_info->frame.dpix = decode_info->frame.dpiy = 96.0;
}
else
{
switch (resolution_unit)
{
default:
FIXME("unknown resolution unit %i\n", resolution_unit);
/* fall through */
case 0: /* Not set */
case 1: /* Relative measurements */
case 2: /* Inch */
decode_info->frame.dpix = xres;
decode_info->frame.dpiy = yres;
break;
case 3: /* Centimeter */
decode_info->frame.dpix = xres * 2.54;
decode_info->frame.dpiy = yres * 2.54;
break;
}
}
if (decode_info->indexed &&
pTIFFGetField(tiff, TIFFTAG_COLORMAP, &red, &green, &blue))
{
decode_info->frame.num_colors = 1 << decode_info->bps;
for (i=0; i<decode_info->frame.num_colors; i++)
{
decode_info->frame.palette[i] = 0xff000000 |
((red[i]<<8) & 0xff0000) |
(green[i] & 0xff00) |
((blue[i]>>8) & 0xff);
}
}
else
{
decode_info->frame.num_colors = 0;
}
if (pTIFFGetField(tiff, TIFFTAG_ICCPROFILE, &len, &profile))
decode_info->frame.num_color_contexts = 1;
else
decode_info->frame.num_color_contexts = 0;
return S_OK;
}
static HRESULT CDECL tiff_decoder_initialize(struct decoder* iface, IStream *stream, struct decoder_stat *st)
{
struct tiff_decoder *This = impl_from_decoder(iface);
HRESULT hr;
This->tiff = tiff_open_stream(stream, "r");
if (!This->tiff)
return E_FAIL;
This->frame_count = pTIFFNumberOfDirectories(This->tiff);
This->cached_frame = 0;
hr = tiff_get_decode_info(This->tiff, &This->cached_decode_info);
if (FAILED(hr))
goto fail;
st->frame_count = This->frame_count;
st->flags = WICBitmapDecoderCapabilityCanDecodeAllImages |
WICBitmapDecoderCapabilityCanDecodeSomeImages |
WICBitmapDecoderCapabilityCanEnumerateMetadata;
return S_OK;
fail:
pTIFFClose(This->tiff);
This->tiff = NULL;
return hr;
}
static HRESULT tiff_decoder_select_frame(struct tiff_decoder* This, DWORD frame)
{
HRESULT hr;
UINT prev_tile_size;
int res;
if (frame >= This->frame_count)
return E_INVALIDARG;
if (This->cached_frame == frame)
return S_OK;
prev_tile_size = This->cached_tile ? This->cached_decode_info.tile_size : 0;
res = pTIFFSetDirectory(This->tiff, frame);
if (!res)
return E_INVALIDARG;
hr = tiff_get_decode_info(This->tiff, &This->cached_decode_info);
This->cached_tile_x = -1;
if (SUCCEEDED(hr))
{
This->cached_frame = frame;
if (This->cached_decode_info.tile_size > prev_tile_size)
{
free(This->cached_tile);
This->cached_tile = NULL;
}
}
else
{
/* Set an invalid value to ensure we'll refresh cached_decode_info before using it. */
This->cached_frame = This->frame_count;
free(This->cached_tile);
This->cached_tile = NULL;
}
return hr;
}
static HRESULT CDECL tiff_decoder_get_frame_info(struct decoder* iface, UINT frame, struct decoder_frame *info)
{
struct tiff_decoder *This = impl_from_decoder(iface);
HRESULT hr;
hr = tiff_decoder_select_frame(This, frame);
if (SUCCEEDED(hr))
{
*info = This->cached_decode_info.frame;
}
return hr;
}
static HRESULT tiff_decoder_read_tile(struct tiff_decoder *This, UINT tile_x, UINT tile_y)
{
tsize_t ret;
int swap_bytes;
tiff_decode_info *info = &This->cached_decode_info;
swap_bytes = pTIFFIsByteSwapped(This->tiff);
if (info->tiled)
ret = pTIFFReadEncodedTile(This->tiff, tile_x + tile_y * info->tiles_across, This->cached_tile, info->tile_size);
else
ret = pTIFFReadEncodedStrip(This->tiff, tile_y, This->cached_tile, info->tile_size);
if (ret == -1)
return E_FAIL;
/* 3bps RGB */
if (info->source_bpp == 3 && info->samples == 3 && info->frame.bpp == 24)
{
BYTE *srcdata, *src, *dst;
DWORD x, y, count, width_bytes = (info->tile_width * 3 + 7) / 8;
count = width_bytes * info->tile_height;
srcdata = malloc(count);
if (!srcdata) return E_OUTOFMEMORY;
memcpy(srcdata, This->cached_tile, count);
for (y = 0; y < info->tile_height; y++)
{
src = srcdata + y * width_bytes;
dst = This->cached_tile + y * info->tile_width * 3;
for (x = 0; x < info->tile_width; x += 8)
{
dst[2] = (src[0] & 0x80) ? 0xff : 0; /* R */
dst[1] = (src[0] & 0x40) ? 0xff : 0; /* G */
dst[0] = (src[0] & 0x20) ? 0xff : 0; /* B */
if (x + 1 < info->tile_width)
{
dst[5] = (src[0] & 0x10) ? 0xff : 0; /* R */
dst[4] = (src[0] & 0x08) ? 0xff : 0; /* G */
dst[3] = (src[0] & 0x04) ? 0xff : 0; /* B */
}
if (x + 2 < info->tile_width)
{
dst[8] = (src[0] & 0x02) ? 0xff : 0; /* R */
dst[7] = (src[0] & 0x01) ? 0xff : 0; /* G */
dst[6] = (src[1] & 0x80) ? 0xff : 0; /* B */
}
if (x + 3 < info->tile_width)
{
dst[11] = (src[1] & 0x40) ? 0xff : 0; /* R */
dst[10] = (src[1] & 0x20) ? 0xff : 0; /* G */
dst[9] = (src[1] & 0x10) ? 0xff : 0; /* B */
}
if (x + 4 < info->tile_width)
{
dst[14] = (src[1] & 0x08) ? 0xff : 0; /* R */
dst[13] = (src[1] & 0x04) ? 0xff : 0; /* G */
dst[12] = (src[1] & 0x02) ? 0xff : 0; /* B */
}
if (x + 5 < info->tile_width)
{
dst[17] = (src[1] & 0x01) ? 0xff : 0; /* R */
dst[16] = (src[2] & 0x80) ? 0xff : 0; /* G */
dst[15] = (src[2] & 0x40) ? 0xff : 0; /* B */
}
if (x + 6 < info->tile_width)
{
dst[20] = (src[2] & 0x20) ? 0xff : 0; /* R */
dst[19] = (src[2] & 0x10) ? 0xff : 0; /* G */
dst[18] = (src[2] & 0x08) ? 0xff : 0; /* B */
}
if (x + 7 < info->tile_width)
{
dst[23] = (src[2] & 0x04) ? 0xff : 0; /* R */
dst[22] = (src[2] & 0x02) ? 0xff : 0; /* G */
dst[21] = (src[2] & 0x01) ? 0xff : 0; /* B */
}
src += 3;
dst += 24;
}
}
free(srcdata);
}
/* 12bps RGB */
else if (info->source_bpp == 12 && info->samples == 3 && info->frame.bpp == 24)
{
BYTE *srcdata, *src, *dst;
DWORD x, y, count, width_bytes = (info->tile_width * 12 + 7) / 8;
count = width_bytes * info->tile_height;
srcdata = malloc(count);
if (!srcdata) return E_OUTOFMEMORY;
memcpy(srcdata, This->cached_tile, count);
for (y = 0; y < info->tile_height; y++)
{
src = srcdata + y * width_bytes;
dst = This->cached_tile + y * info->tile_width * 3;
for (x = 0; x < info->tile_width; x += 2)
{
dst[0] = ((src[1] & 0xf0) >> 4) * 17; /* B */
dst[1] = (src[0] & 0x0f) * 17; /* G */
dst[2] = ((src[0] & 0xf0) >> 4) * 17; /* R */
if (x + 1 < info->tile_width)
{
dst[5] = (src[1] & 0x0f) * 17; /* B */
dst[4] = ((src[2] & 0xf0) >> 4) * 17; /* G */
dst[3] = (src[2] & 0x0f) * 17; /* R */
}
src += 3;
dst += 6;
}
}
free(srcdata);
}
/* 4bps RGBA */
else if (info->source_bpp == 4 && info->samples == 4 && info->frame.bpp == 32)
{
BYTE *srcdata, *src, *dst;
DWORD x, y, count, width_bytes = (info->tile_width * 3 + 7) / 8;
count = width_bytes * info->tile_height;
srcdata = malloc(count);
if (!srcdata) return E_OUTOFMEMORY;
memcpy(srcdata, This->cached_tile, count);
for (y = 0; y < info->tile_height; y++)
{
src = srcdata + y * width_bytes;
dst = This->cached_tile + y * info->tile_width * 4;
/* 1 source byte expands to 2 BGRA samples */
for (x = 0; x < info->tile_width; x += 2)
{
dst[0] = (src[0] & 0x20) ? 0xff : 0; /* B */
dst[1] = (src[0] & 0x40) ? 0xff : 0; /* G */
dst[2] = (src[0] & 0x80) ? 0xff : 0; /* R */
dst[3] = (src[0] & 0x10) ? 0xff : 0; /* A */
if (x + 1 < info->tile_width)
{
dst[4] = (src[0] & 0x02) ? 0xff : 0; /* B */
dst[5] = (src[0] & 0x04) ? 0xff : 0; /* G */
dst[6] = (src[0] & 0x08) ? 0xff : 0; /* R */
dst[7] = (src[0] & 0x01) ? 0xff : 0; /* A */
}
src++;
dst += 8;
}
}
free(srcdata);
}
/* 16bps RGBA */
else if (info->source_bpp == 16 && info->samples == 4 && info->frame.bpp == 32)
{
BYTE *srcdata, *src, *dst;
DWORD x, y, count, width_bytes = (info->tile_width * 12 + 7) / 8;
count = width_bytes * info->tile_height;
srcdata = malloc(count);
if (!srcdata) return E_OUTOFMEMORY;
memcpy(srcdata, This->cached_tile, count);
for (y = 0; y < info->tile_height; y++)
{
src = srcdata + y * width_bytes;
dst = This->cached_tile + y * info->tile_width * 4;
for (x = 0; x < info->tile_width; x++)
{
dst[0] = ((src[1] & 0xf0) >> 4) * 17; /* B */
dst[1] = (src[0] & 0x0f) * 17; /* G */
dst[2] = ((src[0] & 0xf0) >> 4) * 17; /* R */
dst[3] = (src[1] & 0x0f) * 17; /* A */
src += 2;
dst += 4;
}
}
free(srcdata);
}
/* 8bpp grayscale with extra alpha */
else if (info->source_bpp == 16 && info->samples == 2 && info->frame.bpp == 32)
{
BYTE *src;
DWORD *dst, count = info->tile_width * info->tile_height;
src = This->cached_tile + info->tile_width * info->tile_height * 2 - 2;
dst = (DWORD *)(This->cached_tile + info->tile_size - 4);
while (count--)
{
*dst-- = src[0] | (src[0] << 8) | (src[0] << 16) | (src[1] << 24);
src -= 2;
}
}
if (info->reverse_bgr)
{
if (info->bps == 8)
{
UINT sample_count = info->samples;
reverse_bgr8(sample_count, This->cached_tile, info->tile_width,
info->tile_height, info->tile_width * sample_count);
}
}
if (swap_bytes && info->bps > 8)
{
UINT row, i, samples_per_row;
BYTE *sample, temp;
samples_per_row = info->tile_width * info->samples;
switch(info->bps)
{
case 16:
for (row=0; row<info->tile_height; row++)
{
sample = This->cached_tile + row * info->tile_stride;
for (i=0; i<samples_per_row; i++)
{
temp = sample[1];
sample[1] = sample[0];
sample[0] = temp;
sample += 2;
}
}
break;
default:
ERR("unhandled bps for byte swap %u\n", info->bps);
return E_FAIL;
}
}
if (info->invert_grayscale)
{
BYTE *byte, *end;
if (info->samples != 1)
{
ERR("cannot invert grayscale image with %u samples\n", info->samples);
return E_FAIL;
}
end = This->cached_tile+info->tile_size;
for (byte = This->cached_tile; byte != end; byte++)
*byte = ~(*byte);
}
This->cached_tile_x = tile_x;
This->cached_tile_y = tile_y;
return S_OK;
}
static HRESULT CDECL tiff_decoder_copy_pixels(struct decoder* iface, UINT frame,
const WICRect *prc, UINT stride, UINT buffersize, BYTE *buffer)
{
struct tiff_decoder *This = impl_from_decoder(iface);
HRESULT hr;
UINT min_tile_x, max_tile_x, min_tile_y, max_tile_y;
UINT tile_x, tile_y;
BYTE *dst_tilepos;
WICRect rc;
tiff_decode_info *info = &This->cached_decode_info;
hr = tiff_decoder_select_frame(This, frame);
if (FAILED(hr))
return hr;
if (!This->cached_tile)
{
This->cached_tile = malloc(info->tile_size);
if (!This->cached_tile)
return E_OUTOFMEMORY;
}
min_tile_x = prc->X / info->tile_width;
min_tile_y = prc->Y / info->tile_height;
max_tile_x = (prc->X+prc->Width-1) / info->tile_width;
max_tile_y = (prc->Y+prc->Height-1) / info->tile_height;
for (tile_x=min_tile_x; tile_x <= max_tile_x; tile_x++)
{
for (tile_y=min_tile_y; tile_y <= max_tile_y; tile_y++)
{
if (tile_x != This->cached_tile_x || tile_y != This->cached_tile_y)
{
hr = tiff_decoder_read_tile(This, tile_x, tile_y);
}
if (SUCCEEDED(hr))
{
if (prc->X < tile_x * info->tile_width)
rc.X = 0;
else
rc.X = prc->X - tile_x * info->tile_width;
if (prc->Y < tile_y * info->tile_height)
rc.Y = 0;
else
rc.Y = prc->Y - tile_y * info->tile_height;
if (prc->X+prc->Width > (tile_x+1) * info->tile_width)
rc.Width = info->tile_width - rc.X;
else if (prc->X < tile_x * info->tile_width)
rc.Width = prc->Width + prc->X - tile_x * info->tile_width;
else
rc.Width = prc->Width;
if (prc->Y+prc->Height > (tile_y+1) * info->tile_height)
rc.Height = info->tile_height - rc.Y;
else if (prc->Y < tile_y * info->tile_height)
rc.Height = prc->Height + prc->Y - tile_y * info->tile_height;
else
rc.Height = prc->Height;
dst_tilepos = buffer + (stride * ((rc.Y + tile_y * info->tile_height) - prc->Y)) +
((info->frame.bpp * ((rc.X + tile_x * info->tile_width) - prc->X) + 7) / 8);
hr = copy_pixels(info->frame.bpp, This->cached_tile,
info->tile_width, info->tile_height, info->tile_stride,
&rc, stride, buffersize, dst_tilepos);
}
if (FAILED(hr))
{
TRACE("<-- 0x%x\n", hr);
return hr;
}
}
}
return S_OK;
}
static HRESULT CDECL tiff_decoder_get_color_context(struct decoder *iface,
UINT frame, UINT num, BYTE **data, DWORD *datasize)
{
struct tiff_decoder *This = impl_from_decoder(iface);
const BYTE *profile;
UINT len;
HRESULT hr;
hr = tiff_decoder_select_frame(This, frame);
if (FAILED(hr))
return hr;
if (!pTIFFGetField(This->tiff, TIFFTAG_ICCPROFILE, &len, &profile))
{
return E_UNEXPECTED;
}
*datasize = len;
*data = RtlAllocateHeap(GetProcessHeap(), 0, len);
if (!*data)
return E_OUTOFMEMORY;
memcpy(*data, profile, len);
return S_OK;
}
static HRESULT CDECL tiff_decoder_get_metadata_blocks(struct decoder *iface,
UINT frame, UINT *count, struct decoder_block **blocks)
{
struct tiff_decoder *This = impl_from_decoder(iface);
HRESULT hr;
BOOL byte_swapped;
struct decoder_block result;
hr = tiff_decoder_select_frame(This, frame);
if (FAILED(hr))
return hr;
*count = 1;
result.offset = pTIFFCurrentDirOffset(This->tiff);
result.length = 0;
byte_swapped = pTIFFIsByteSwapped(This->tiff);
#ifdef WORDS_BIGENDIAN
result.options = byte_swapped ? WICPersistOptionLittleEndian : WICPersistOptionBigEndian;
#else
result.options = byte_swapped ? WICPersistOptionBigEndian : WICPersistOptionLittleEndian;
#endif
result.options |= WICPersistOptionNoCacheStream|DECODER_BLOCK_FULL_STREAM|DECODER_BLOCK_READER_CLSID;
result.reader_clsid = CLSID_WICIfdMetadataReader;
*blocks = malloc(sizeof(**blocks));
**blocks = result;
return S_OK;
}
static void CDECL tiff_decoder_destroy(struct decoder* iface)
{
struct tiff_decoder *This = impl_from_decoder(iface);
if (This->tiff) pTIFFClose(This->tiff);
free(This->cached_tile);
RtlFreeHeap(GetProcessHeap(), 0, This);
}
static const struct decoder_funcs tiff_decoder_vtable = {
tiff_decoder_initialize,
tiff_decoder_get_frame_info,
tiff_decoder_copy_pixels,
tiff_decoder_get_metadata_blocks,
tiff_decoder_get_color_context,
tiff_decoder_destroy
};
HRESULT CDECL tiff_decoder_create(struct decoder_info *info, struct decoder **result)
{
struct tiff_decoder *This;
if (!load_libtiff())
{
ERR("Failed reading TIFF because unable to load %s\n",SONAME_LIBTIFF);
return E_FAIL;
}
This = RtlAllocateHeap(GetProcessHeap(), 0, sizeof(*This));
if (!This) return E_OUTOFMEMORY;
This->decoder.vtable = &tiff_decoder_vtable;
This->tiff = NULL;
This->cached_tile = NULL;
This->cached_tile_x = -1;
*result = &This->decoder;
info->container_format = GUID_ContainerFormatTiff;
info->block_format = GUID_ContainerFormatTiff;
info->clsid = CLSID_WICTiffDecoder;
return S_OK;
}
#else /* !SONAME_LIBTIFF */
HRESULT CDECL tiff_decoder_create(struct decoder_info *info, struct decoder **result)
{
ERR("Trying to load TIFF picture, but Wine was compiled without TIFF support.\n");
return E_FAIL;
}
#endif
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